Even an island can be crowded, and the people of Santa Cruz del Islote in Columbia know this is true. The New York Times reports that the island is the most densely populated place on earth, which is one reason it attracts many tourists.
"Everyone wants to see what it's like for 1,200 people to live on a patch of land four times as dense as Manhattan, with no services - no running water, sewer system, police, hospital, trash pickup," according to the New York Times.